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Properties of Number : Problem

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by BlindVision » Tue Apr 28, 2009 7:51 pm
If m and n are positive integers, is (√m)^n and integer?

1) (√m) is an integer.

2) (√n) is an integer.

OA = A

Can someone please explain how come the answer can't be C?


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Re: Properties of Number : Problem

by bluementor » Wed Apr 29, 2009 12:35 am
BlindVision wrote:If m and n are positive integers, is (√m)^n and integer?

1) (√m) is an integer.

2) (√n) is an integer.

OA = A

Can someone please explain how come the answer can't be C?
The question stem already provides the info that m and n are integers. However, this doesnt guarantee that √m is an integer. Statement 1 confirms this and its sufficient to answer the question since we know from the question stem that n is also an integer.

(Integer)^Integer = Integer

-BM-
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by BlindVision » Wed Apr 29, 2009 11:59 am
Thanks for the reply.

Can you please explain how come the answer can't be "C"? If we put both statements together, if (√m) & (√n) are both integers, wouldn't they result in an integer?? Please explain. Thank you!
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by dmateer25 » Wed Apr 29, 2009 12:29 pm
BlindVision wrote:Thanks for the reply.

Can you please explain how come the answer can't be "C"? If we put both statements together, if (√m) & (√n) are both integers, wouldn't they result in an integer?? Please explain. Thank you!
Because A alone is sufficient to answer the question, C can't be the answer.


C will only be the answer if both statements are needed to answer the question.
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by aj5105 » Thu May 07, 2009 11:15 pm
(A)
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